Improvement in stoves for heating soldering-irons



l. CRESSMAN.

Soldering Iron Heater.

No. 41,200. Patented Jan. 12, 1864.

Witnesses.- Ih vent-o r:

UNITE STATES ATENT FFICE.

ISAAC ORESSMAN, OF PHILADELPHIA, PENNSYLVANIA,ASSIGNOR. TO

HIMSELF AND DANIEL BOHLER.

IMPROVEMENT IN STOVES FOR HEATING SOLDERING-IRONS.

Specification forming part of Letters Patent No. 41,200, dated January12, 1864.

To all whom it may concern.-

Be it known that I, ISAAC GnEssMAN, of Philadelphia, in the county ofPhiladelphia and State of Pennsylvania, have invented certain new anduseful Improvements in Soldering Pots or Furnaces; and I hereby declarethat the following is a full, clear, and exact description of the same,reference being had to the accompanying drawings, in which- Figure l isa front elevation of my improved soldering pot or furnace. Figs. 2 and 3are sectional views of the same, according to the vertical planesindicated bylines a b and c d, respectively. Fig. 4 is a horizontalsection through the apparatus on line 0 f.

This invention relates to apparatus for heating soldering-iron used formelting the solder for works in tinned iron, sheet-zinc, and many ofthose in copper and other thin metals.

The ordinary solderingpot is wasteful, a large amount of fuel beingnecessary to attain the requisite temperature, and no means beingprovided for regulating the combustion of the fuel according to theamount of work to be executed. On the other hand, the temperature withinthe pot or furnace cannot be increased or decreased to suit the natureof the work or the kind of metal to be worked upon. Great skill andpractice is therefore required on the part of the operator to supply byhis judgment the shortcomings of the apparatus, which he can only effectby leaving the irons in the oven more or less time or by allowing themto cool after removing them from the pot, both of which consume muchtime.

The object of my invention is to produce a portable apparatus,economical in its construction and operation, affording facility toregulate the temperature within the pot or furnace, according to thejudgment of the operator; and my invention consists, first, in theconstruction and arrangement of a pot or furnace for heatingsoldering-iron by means of lighting-gas mixed with atmospheric airsubstantially as hereinafter shown and described; second, in thecombination, with a pot or its equivalent gasburner and air-chamberunder the arrangement described, of a wire-gauze covering and grate, thetwo having interposed pumice-stone, as hereinafter shown and described;third, in combining the pot and gas-heating contrivance with areverberatory shell to concentrate the heat upon the iron, substantiallyas hereinafter shown and described.

To enable others to make and use my improved soldering-pot, I shall nowproceed to describe its construction and operation.

A in the accompanying drawings represents a cylindrical vessel inclosingthe parts constituting my improved apparatus. It is mounted upon a base,B, provided with apertures or made of a plate whose open-workornamentation will allow of the ingress of the air into the interior ofthe vessel A. A cover, 0, may be applied to give the whole apparatus anair of compactness and to prevent in some measure too great radiation ofheat, which may be offensive to the operator. Handles D are alsoprovided to render the whole portable. The description of the exteriorwill be completed by mentioning the solderingiron support Ei. 0., aninclined plate projecting from the side of the cylindrical vesselimmediately underneath the opening G through which the soldering-ironsare introduced into the furnace to be heated.

Into the bottom H of the cylinder A, and to project above it, is securedan ordinary or suitable gas-burner, I, mounted upon the end of aflexible tube, whereby gas may be conveyed from any available burner orpipe in the building of the shop. Around this burner, and extendingupward, there is a chamber, K, closed on top by means of wire-gauze, thebottom being formed of a small perforated annular disk, m, holding theburner and allowing the air to enter through the openings in the base,and to penetrate the interior of the said chamber, where it will mixwith the gas, producing an inflammable gas whose heating properties areincreased at the expense of its illuminating power. Over the wire-gauzecovering are distributed fragments of spongy pumice-stone, the object ofwhich is to retain the heat, producing the same effect as charcoal. inits incandescent state. A small grate of parallel bars, p, are arrangedon top of the pumice-stone to support the soldering-iron while beingheated.

In order to concentrate the heat upon the grate and the soldering-tool,I surmount th grate with a reverberatory roof made of brass or othermaterial which may be easily brought into the requisite shape. This roofor arch R, I prefer to make of semiovoida-l form, an openin g beingprovided at the contracted end which corresponds with the opening G inthe cylindrical envelope. In the opposite end small holes q q q! q arecut in the reverberatory shell and the cylindrical vessel for the exitof the vapor or gases generated within the furnace. By this arrangementthe furnace does not radiate heat to an extent to incommode theoperator, because the air filling the space between the reverberatorydome and the cover of the furnace is a non-conductor ofheat.

The operation of the apparatus will be understood by reference to thedrawings. Gas being turned on it will issue from the burner I, mix withthe air contained in and supplied to the chamber K, and the mixture willooze through the wire gauze and pumice-stone, Where it may be ignited.Thejet of gas may then be regulated at the will of the operator byturning a cock, With which the gas-supply pipe is provided. By thismeans the temperature may be regulated to suit anykind of work.

Another advantage consists in the great saving of fuel. inasmuch as thesupply of gas may be shut eff at any moment, so that during theintermediate hours of Work no consumption of fuel is had, while theapparatus may be putin operative conditionbysimply turningthe gascockand by applying a match.

Having thus fully described my invention, I claim 1. The constructionand arrangement of a pot or furnace for heating soldering-iron by meansof lighting-gas mixed with atmospheric air, substantially as hereinshown and described.

2. The combination, with a pot or its equivalent gas-burner and airchamber under the arrangement described, of a Wire-gauze covering andgrate, the two having interposed pumice stone, as herein shown anddescribed.

3. Combining the pot and gas-heating eontrivances with a reverberatoryshell to concentrate the heat upon the iron, substantially as hereinshown and described.

In testimony whereof I have signed my name to this specification beforetwo subscribing witnesses.

ISAAC G RESSMAN.

Witnesses:

A. POLLOK, J. L. OoonBs.

